Carriage-stop mechanism for perforating-machines.



w., v v. 'LASKHL CARRIAGE STO? MECHANJSM OR PEHFORATlNG MACHINES.

,APPLICATION FILED Amz. 1917.

' Patented Deo. 17, 1918.

3 SHEETS-SHEET l.

www kf ea l MW w m W. W. LASKERL` CARRIAGE soP IvIEcIIIINIsM EoR PERFORMING MACHINES.

y AEPLICATION FILED APR.2.19I7.

Patented Dec. 17, 1918.

2879706 l asHEET- 2 IIZ In vena? W. W. LASKER. CARRIAGE STOP MECHANIsIvI EUR PERFORMING MACHINES.

l l APPUCATON FILED APR.2, 1917. 1,287,706. Patented Dec. 17, 1918.

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yik'inhy maintain the 10mm' @nds of du; mdf; '36 against hevormud Qnds of the resses The mds are digpofsed to (mange the pins 4:2 disposed under the path of the Carriage. 110

The pins 42 are arranged in rows so that the rods 3G will be in cooperative relation with a row of pinsl for each successive position of the carriage.

A recessed plate 44, supported by the plates 21 and 22, forms a comb between the.

teeth of which the elbows of the bell cranks 19 engage, whereby the bell cranks are held properly spaced.

When a key 10 is depressed, a pin 14 engages a bell-crank 19 and depresses a rod 36. This movement also actuates the escapement D and moves the carriage by means of the mechanism now to be described.

A shaft 45 journaled in the plates 21 and 22 has secured thereto a universal plate 46 (Fig. 5) having an upturned edge adapted to be yieldably held in engagement with and adapted to be rocked by any one of the crank-arms 38. 'This engagement is accomplished by means of a spring 48 secured at one end to the arm 49 fixed to the shaft 45, and at the other endsecured to a pin 50 fixed in the block 24.

The shaft 45 extends beyond the plate 22 and has fixed thereto an arm 51 (Figs. 1, 3 and 4) the free end of which engages the teeth of the ratchet wheel 52, to which is fixed a. gear 54 (Fig. 1) mounted on the stub shaft 55 and meshing with the rack 66 se-` cured to the outside of the rail 32. l

The carriage C is yieldably drawn forward against the action of the escapement by means of a cord 68 wound upon a spring housing 69 (F ig.' 1) mounted on a shaft 70 on. the front end of the frame A and roagainst rotation and thereby the carriage against travel.

The arm 51v has a rearwardly extending portion provided with an inwardly extending pin 74 engaging under the pawl 72, whereby depression of the plate 46 rocks the shaft 45, and the arm 51 and raises the pawl out of engagement with the teeth of the -wheel 52, whereupon the wheel moves until a tooth engages and raises the free end of the arm 51, the pawl 72 is drawn back into locking engagement with the ratchet wheel by means of the spring 75 (F ig. 1) having one end secured to the pawl 72 by means of the pin 76 and its otherend secured to a pin 78 on the laterally extending portion 79 of the extension 28. movement of the ratchet wheel through the space'of one tooth permits the carriage to move the distance between two adjacent rows of pins 42. i.

For returning the carriage to its initial position there is provided the handle 80 The (Fig. 1) upwardlv extending from the stuby shaft 55. 3

To permit the carriage to be shifted independently vof the escapement mechanism, it is only necessary tori-aise the pawl 72 by means of the finger piece formed on the outer end of the nin 76.

For permitting the carriage C to travel uninterruptedly a distance greater than one tooth space of the ratchet wheel, the mechanism now to be described is provided.

The key 11 (Fig. 1) marked X is operatively connected byone of the cables 12 and pins 15A (Fig. 5) to the second bellcranklever 19 (Figs. 2 and 5) which lever is provided with a rearwardly and upwardly bent slotted extension 81 into the slot 82 of which slidably engages a pin 84 carried on the arm 85 fixed on the shaft 86 journaled in a rearward extension of the plate 21 and in a bearing 88 on the block 24.

On the forward end of the shaft 86, outside of the bearing 88 there is fixed. a lever 89 (Figs. 2 and 4). the forward end of which engages under the outer end of a plate 90 pivotallv mounted on the upward extension 91 of the block 24.

. The-plate 90 is provided near its outer end with a forwardly projecting lateral pin 92 adapted to engage under the pin 76.in

' the pawl 72,l whereby the pawl is raised and released from the ratchet when the key 11 is depressed and the lever 89 and the plate 90 consequently raised. i

This raising of the pawl releases the carriagev which is then vdrawn forward luntil stopped by engagement of the plate 90 with one of the' stops 0r abutments 94 (Figs. 1

and 4), which are adjustable in a mannerI i raised the cam extension 99 of the latch,

engages over the fixed plate 100 on the extension 91 of the block 24.

l"When the plate 90 has almost reached the stop 94, the stop is engaged by the .pin 101- on the latch 95' whereupon the latch is pushed back and the` cam-extension 99 is pushed off' the fixed plate 100 and the plate 90 falls and the pawl 72 rengages the ratchet.

In order to prevent the possibility of a rebound or an over spacing of the carriage when the plate 90 strikes the stop 94, means is provided for engaging between the teeth of. the ratchet wheel just as this striking takes place, whereby the ratchet wheel is positively locked against,l rotation in either direction. This ineens, illustrated in Figs. 1, r2, 3 and 4, and shown diagrannnatically in Figs. 6, 7 and 8, will now be described.

- A locking pin 102 slidable-in fa bore 104 in the extension 91 .and provided with collars 105 and 106 near opposite ends, is adapted to vslide outwardly to engage between :adjacent teeth of the ratchet wheel A`52., yand inwardly to disen-gage ysaid teeth.

The locking pin 1:02 is forced outwardly by means of theyengagement of the collar 105 by the long :ari-n 108 fixed to the vertical shaft 10.9 :adaptedto oscillate in the vertical bearing 110 supported `on the bearing 88. The upper end of this vertical .shaft carries and is oscillated a short arm 1 11, which carries at its free end an up turned cam 112 adapted to be engaged by the cam 114 on the end of the large arm of the lever 115 pivoted on the small bracket 116. The short arm 11S of this lever extends upwardly and through a slot in the plate 90 and projects toward the stop 91 and somewhat forwardly .of .the plate 90 .and the pin 101.

Fig. .G shows diagranmiatically the position of the parts before the short arm 118 reaches the stop 91. As showny by Fig. 7, when the short arm 118 reaches the stop the short arm is rocked causing the cam 11-1 to act upon the cam 112 to rock the arm 111, the shaft 10S) and the large arm l108, thusforcing the pin 102 between the teeth of the ratchet wheel, as shown in Fig. 'i'.

The pin 102 must be retracted before the operator of the machine proceeds further. To this end I have fixed, on the shaftfl, near the plate 22. an arm 119 adapted to engage the upper arm of the lever 120 pivoted to the bracket 121. the free end of the lower arm of the lever 1 20 engaging the collar 106.

IVhen the shaft -l is rocked, as in the normal operation of the machine, thearm 1.19 moves upwardly causing the lower end of the lever 12() to press the collar 106 in,.-`

wardly, thus withdrawing the pin `102 from between the teeth ofthe ratchet wheel,` l

The anti-rebound mechanism just described constitutes the principal feature of the present invention.

vThe stops 91 may be set in any one of the notches 122 in the notched rail 124 supported on the brackets 125. IVhen the stops 9i are disposed in their notches the carriage is stopped with the rods 3G V(Fig. -in cooperation with a row of the pins 42, there being a notch 122 corresponding to each row of pins.

(')n top of each notched rail 12-1 near the ends thereof are a pair of lugs 126 supporting between them a rod 128 passing through slots 129 in the stops 9i.

Each stop 94 comprises aplate provided with an elongated manipulating piece 130.

(Fig. i) and the stopping projection 131; When the stops are in stopping position they are disposed as in Fig. 4. On the other hand, when they are disposed in non-stopping position, they are disposed with the manipulating piece extending upwardly, the .stops being moved to one end or the other of the rod 128 where they will be'ofnt of the way. Y

In the lower part of the framey of the machine, I mount the main Ishaft 132 controllably connected with a source of power and armed with cams and driving members and.

operably connected by cams, links and otherwise with the power driven machine members; none of which constitute my present invention and therefore ,need not be de# scribed here.

From the foregoing it will be observed `that the eXtendedt-ravel of the carriage only takes place when the X key is depressed and that the pin 102 is only engaged between the teeth of the ratchet when the carriage is being :stopped by the.A stops 91.

It is obvious that various changes and modifications may be'made in the construction and details without departing from the general spirit of the invention.

I claim as my invention:

1. In a machine of the character described, the combination of a pair of relatively movable parts adapted to be brought into stopping engagement; and means by said relative movement caused to move into position to prevent rebound of said parts after said engagement takes place, and remain` in said anti-rebounding position until the machine is again actuated to proceed in itsnormal operation, and a device for releasing said means as thevnormal operation of the machine proceeds. y y

2. In a machine ofthe character described, :the combination of a pair of relatively mov- ,able parts adapted to be brought into stop- ",ping engage-ment; and means by said rela- ",tive movement caused to move into posi-tion to prevent rebound of said parts after said engage-ment takes place. and remain in said anti-rebounding position until the machine' 1s, again actuated to proceed in its normal operation, and a device for automatically releasing said means on the continuation of the normal operation .of the machine.

3. In a. machine of the character described, the combination of a pair of parts adapted for relative movement and adapted to be. brought into relative stopping engagement; a device controlling said relative movement and carrying a notch; and means adapted to be moved into engagement with said notch substantially as said stopping engagement takes place.

4. In a machine of the character described, the combination of a pair of parts adapted for relative movement and adapted to be brought into relative stopping engagement; a wheel cont-rolling said relative movement Iand carrying teeth; and means moved by ment carried by the abutment .carrying part;`

a movable sto carried by the stop carrying part; means or moving said movable stop and releasing the controlling means whereby said parts mayinove until the movable stop and the abutment are brought into stopping Aengagement; locking means adapted to lock said controlling means; a striking means vcarried with the movable-stop-carrying v lmeans and adapted to strike the abutment; "and an operative connection between said .,locking means and said striking means whereby the striking I the abutment by 1 tlielstriking means moves the locking means i nto f .engagement with said controlling.

sans, p 6, In a: machine of the character described,

i' the combination of an abutment carrying part; a movable-stop-carrying part; means for relatively moving said parts; means for controlling said relative movement.; an abuti ment carried by the abutment carrying part;

a' movable stop carried by the stop carrying part; means for moving -said movable stop and releasing the controlling means whereby said parts may move until the movable stop and the abutment are brought into stopping-engagement; locking means adapted to lock said controlling means; a striking means carried with the movable-stop-carrying means and adapted to strike the abut- ""ment; an operative connection betfweensaid locking means and sald strlking means whereby the striking of the abutment. by the strikmg means moves the locking means into engagement with said 'controlling means;

Fandmeans for automatically releasing the' locking means when the normal operation of the machine proceeds.

I. In a machine of the character described,

y he combination of an abutment carrying part; a movable-stop-carrying part; 'means for relatively moving said parts; means for controlling said relative movement; an abutment carried by the abutment carrying part; a movable stop carried by the' stop carrying part; means tor movino' said movable stop and releasing the controIling means whereby said parts may move until the movable stop and the, abutment are brought into stopping engagement; locking means adapted to lock said cont-rolling means; av striking means carried with the movable stop carrying means and pivote-d to the movable stop and comprising an upward 4andA forward eXtension adapted to strike the abutment, and a rearwardly extending arm having a cammed end: a pivoted shaft; an arm 'fixed thereto and having a cam engagement with said cammed end; and another arm on said shaft and adapted to engage and operate said locking means when said extension strikes the abutment. y

8. In a machine of the character described, the 'combination of an abutment carrying art; a movable-stop-carrying part; means or relatively'moving said parts; means for controlling said relative movement; an abutment 'carried by the abutment carrying part; a movable stop carried by the stop carrying part; means for moving said movable stop and releasing the controlling means whereby said parts may move until the movable stop andthe abutment are brought into stopping engagement; locking means adapted to lock said controlling means; a striking means carried with the movable-stop-carrying means and pivoted to the'movable stop and comprising an upward and forward eXtension adapted to strike the abutment, and a rearwardly extending arm having a cammed end; a pivoted sha-ft; an arm xed thereto and having a cam engagement with said cammed end; another arm on said shaft and adapted to engage and operate said locking means when said extension strikes the abutment; and means for automatically releasing the locking means when the normal operation of the machine proceeds.

9.. In a machine of the character described, the combination of an abutmentcarrying part and a movable-stop-carrying part adapted for relative movement; an abutment carried on the abutment-carrying part; a toothed element; a rocking means carried by the movable-stop-carrying part; detents carried' by the rocking means and adapted to engage the teeth of the toothed element; a movable stop carried by the movable/-stop-carrying part; means for moving the movable stop and releasing pawl de-` tents from the teeth, whereby said parts may move until said movable stop and said abutment are brought into stopping engagement; a locking meanscarried by the movable-Stop-carrying part; striking means carried with the movable-stopfcar'rying. means and adapted to strike said abutment; and an operati-ve connection between said locking means and said striking means whereby the striking ofthe abutmentsby the striking a -means positively moves the :docking means into engagement with said teeth.

10. In a machine of the :character described, the combination.,ofan abutmentcarrying part and a movable-stop-carrying part adapted for relativemovement; an abutmentcarried on the abutment'carrying part; a ratchetwheel havingoperative connection with said partsfor: controlling said leemos ing a pin provided with a collar; a striking means carried with the movable-stop-earrying means and pivoted to the movable stop and conlprising an upward and forward extension adapted to strike the abutment,and

a rearwardly extending arm Yhaving av cammed end; a pivoted shaft; anvarm fixed thereto and having a cam engagement with said cammed end; and another arm on sai shaft and adapted to engage the collar of the pin and cause the pin to engage between the teeth of the-ratchet when said extension strikes the abutment. l y

ll. In a machine Aof the character described, the combination of an abutmentcarrying part and a movable-stop-carrying part adapted for relative movement; an abutx'i'ientcarried on the abutment-carrying part; a ratchet wheel having operative connection with said parts for controlling said relative movement; a rocking means carried by the movable-stop-carrying part; detents carried by the rocking means and adapted to engage the teeth of the ratchet wheel; a movable stop carried by the movable-stopcarrying part; means for'moving the movable stop and releasing pawl detents from the'teeth, whereby said parts may move until said movable stop, and said abutment are brought into stopping engagement; a locking means carried by the movable-stopcarrying part adapted to engage between the teeth of the ratchet wheel and comprising a pin provided with a collar at each end; a striking means carried with the movable-stop-carrying means \and pivoted to' the movable stop and comprising an upward and forward extension adapted to strike the abutment, anda rearwardly eXtendin arm having a cammed end; a pivoted shait; an arm fixed thereto and'fhaving a cam engagement with said cammed end; another arm on said shaft and adapted te engage the collar at the outer end of the pin and cause the pin to engage between the teeth of the ratchet when said extension strikes the abutment; an arm carried by said rocking means; and a fulcrumed lever adapted to be engaged by said last named arm and to engage the collar on the inner end of said pinA to withdraw the pin from the ratchet when the rocking arm rocks.

l2. ln a machine of the characterV described, the combination ot' an abutment carrying part; a movable-stop-carrying part; means for relatively moving said parts; means for controlling said relative movement; an abutment carried by the abutment carrying part; a movable stop carried by the stop carrying part; means. for moving said movable stop and releasing the controlling means whereby said parts may move until the movable stop and the abutment are brought into stopping engagement; locking means adapted to lock said controlling means; a striking means carried with the movable-stop-carrying means and adapted to strike the abutment; an operative connection between said locking means and said striking means whereby the striking of the abutment by the striking means moves the locking means into engagement with said controlling means; and a latch radapted to latch said movable stop in moved position` and carrying an extension adapted to strike the abutment to release the movable means from said moved position before said striking means strikes the abutment.

WLLIAM W. LASKER.

Witnesses H. M. KiLrA'rnrolr,

H. D. PENNEY. 

